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Finding the Fourth Proportional to 316,642.65, 474,988.58 and 92,006.31

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Solution

The fourth proportional to 316,642.65, 474,988.58 and 92,006.31 is: 138,016.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,642.65 : 474,988.58 = 92,006.31 : x
  2. Step 2: Convert to fraction form
    316,642.65/474,988.58 = 92,006.31/x
  3. Step 3: Cross multiply
    316,642.65x = 474,988.58 × 92,006.31
  4. Step 4: Simplify right side
    316,642.65x = 43,701,946,537.94
  5. Step 5: Solve for x
    x = 43,701,946,537.94/316,642.65
  6. Step 6: Final answer
    x = 138,016.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.